;******************************************************************************* ; MSP430G2xx2 Demo - Timer_A, Toggle P1.1/TA0, Up Mode, DCO SMCLK ; ; Description: Toggle P1.1 using hardware TA0 output Timer_A is configured ; for up mode with CCR0 defining period, TA0 also output on P1.1 In this ; example, CCR0 is loaded with 500 and TA0 will toggle P1.1 at TACLK/500 ; Thus the output frequency on P1.1 will be the TACLK/1000 No CPU or ; software resources required ; As coded with TACLK = SMCLK, P1.1 output frequency is ~1000000/1000 ; SMCLK = MCLK = TACLK = default DCO ; ; MSP430G2xx2 ; ; /|\| XIN|; | | | ; |RST XOUT|; | | ; | P1.1/TA0| > SMCLK/1000 ; ; D Dang ; Texas Instruments Inc ; December 2010 ; Built with Code Composer Essentials Version: 4.2.0 ;******************************************************************************* cdecls C,LIST, "msp430g2452.h" ; -.text ; Progam Start ; -RESET mov.w #0280h,SP ; Initialize stackpointer StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT SetupP1 bis.b #002h,&P1DIR ; P1.1 output bis.b #002h,&P1SEL ; P1.1 option slect SetupC0 mov.w #OUTMOD_4,&CCTL0 ; CCR0 toggle, upmode mov.w #500-1,&CCR0 ; SetupTA mov.w #TASSEL_2+MC_1,&TACTL ; SMCLK, clear TAR ; Mainloop bis.w #CPUOFF,SR ; CPU off nop ; Required only for debugger ; ; -; Interrupt Vectors ; -.sect ".reset" ; MSP430 RESET Vector short RESET ; end